Hose coupling



C. T. SMITH HOSE COUPLING l June 16, 1931.

Filed May 18, 1928 gnvemto'o CHARLES TSMITH Patented June 16,1931

CHARLES '1. SMITH, or cLEvE nNnHEI'GHTs, omo

HOSE oourmlve 1, ,1

Application filed May 18,

' This invention relates to an improved hose coupling.

' The objects of the present invention are to devise a coupling with means for effectively 5 sealing the same in a comparatively simple manner; to provide means to prevent the back pressure from suddenly forcing the coupling members apart upon disconnecting the same; to provide an improved form and arl rangement of valve together with an im-,

proved means for manipulating the same.

Other objects will appear fromthe following description and claim when considered together with the accompanying drawings.

Fig. 1 shows my improved coupling in elevation; Fig. 2 is a sectional view taken on line 22 of Fig.1; and Figs. 3 and 4 are sectional views taken on lines 3-3 and H, respectively, of Fig. 2. 20

v the members land 2 which are threaded together, the member 1 having its one end threaded at 3 for attachment to the air line, while the member 2 has its other end provided with lugs 4.- which form a bayonet lock with the companion socket portions 5 on, the

other part of the coupling. The corners of the lugs 4 are squared.

The other part of the coupling comprises themembers 6 and 7. The member 6 has the socket portion 5 formed thereon and receives the other member -7 which extends therethrough. A swivel connection is provided between the parts 6 and 7 by spinning 5 over the portion 8 about a suitably provided shoulder on the member 7.' The hose is adapted to be attached'to the neck 9 which is formed on the portion 7.

The valve memberis in the form of an annular collar or ring'portion 10 from which extend the'equi-spaced legs or web portions 11 which terminate in and join with the closed end portion 12. The portion 12 has a beveled portion 12 which is adapted for seating engagement with a correspondingly formed seat portion provided on the portion 2, as clearly illustrated in Fig. 2 of the drawings. The collar portion 10 serves as a means for guiding the valve member in its straight line movement in the opening through the The valve end of the coupling comprises 1928. se'riai no. 278,851. r

mem'ber'2. The lugs 13 are provided upon the inner'conical surface of the member 1, .therebeing three such lugs in the present case. The inner edges of these lugs are par allel with the axis of the coupling, andthey serve as a means forlimiting the opening movement of the valve member, as indicated inFig. 2. j Asa means of opening the valve member, the member- 7' is provided with a projecting neckportion 14, which is adapted to engage the collar portion 10, upon coupling the parts together. Then the air or-other fluid can pass between the lugs 13, throughthe openings between the legs 11 and thence through res PATE T. OF IC the longitudinal bore through the member 7,

as will be clearly understood from Fig. 2. With the present structure, it is possible 'to turn the member 7 independently of the member"6,'at all times and even when the valve is open, this being made possible/by the particular structure and arrangement of parts rubber or the like is removably inserted'in the correspondingly formed groove in the inner wall of the member. 2, near the one end thereof soas to, permitinsertion of the same. The opening through this ring is slightly smaller'than theinside'diameter of the -me1nber 2 and is also slightly smaller'than the outside diameter of the neck portion 14;. As will 'beseen from Fig. 2, the neck portion 14 is slightly smaller than the opening through, the member 2. The gasket 16 has an annular channel 16 -to whichthe pressure of the air I or other fluid will its way when thevalve is I open; This pressure in the channel 16 will exert itself both inwardly andoutward 1y, with the result that the inner and. outer walls of the gasket Will be very effectively sealed against the neck 14 and the groove wall, respectively. As indicated in the drawing, the depth of the gasket is slightly less than the depth of the groove.

The neck 14 has oppositely disposed outlet openings or ports 14 at approximately the points indicated in Fig. 2. The purpose of these openings is to afford a means of relieving the back pressure in the hose, upon disengaging the coupling and prior to complete separation of the parts. That is, upon disconnecting the bayonet lock and withdrawing the neck 14 from the member 2 to such point j that the openings 14 are exposed to the outside air, the back pressure Will at once he relieved through these openings prior to complete separation of these parts. Thus, there is precluded the danger of the parts being suddenly forced apart.

Because of the relative size of the gasket 16, as above explained, its resiliency serves also as a means of holding the bayonet lock in en gagement. The insertion of the neck 14 tends to distort the inner Wallof the gasket which, upon release of the parts, will tend to return to its normal condition and thereby exert a certain force for holding the bayonet lock in closed engagement.

The advantages of the present structure Will be obvious to those who are familiar with the art to which the present invention relates. Not only is the structure simple, but the parts are efiectively sealed against leak. The valve has an extended and dependable slidable engagement. The valve is actuated without the use of any spring, and the hose end of the coupling can be swiveled with ease and without interference with the valve, even when the valve occupies open position. The device is positive and dependable in its action, and all of the parts are readily accessible for assembly or disassembly.

It is to be understood that the present disclosure is merely forpurposes of illustration and that modifications of the present form of structure may be devised without departing from the spirit of the present invention. All such modifications are intended to be comprehended by the following claim.

What I claim is:

A hose coupling comprising two members adapted for interlocking connection for the passage of fluid therethrough, a valve in one of said members, the other of said members having projecting portion adapted for insertion Within said one member for opening engagement with said valve, said one member having an annular three Wall groove in its inner surface in immediate proximity to the end thereof, and a readily accessible, expansible gasket arranged in said groove and around said projecting portion for sealing the connection, said gasket having an annular chan- -nel facing the incoming pressure so as to be signature.

' CHAR-LES T. SMITH. 

